package com.heima.wemedia.service.impl;

import com.alibaba.fastjson.JSON;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.heima.apis.article.IArticleClient;
import com.heima.apis.schedule.IScheduleClient;
import com.heima.common.aliyun.GreenImageScan;
import com.heima.common.aliyun.GreenTextScan;
import com.heima.file.MinIoTemplate;
import com.heima.model.article.dtos.ArticleDto;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.schedule.dto.Task;
import com.heima.model.wemedia.pojos.WmChannel;
import com.heima.model.wemedia.pojos.WmNews;
import com.heima.model.wemedia.pojos.WmSensitive;
import com.heima.model.wemedia.pojos.WmUser;
import com.heima.utils.OcrUtil;
import com.heima.utils.ProtostuffUtil;
import com.heima.utils.SensitiveWordUtil;
import com.heima.wemedia.mapper.WmSensitiveMapper;
import com.heima.wemedia.service.AutoScanService;
import com.heima.wemedia.service.WmChannelService;
import com.heima.wemedia.service.WmNewsService;
import com.heima.wemedia.service.WmUserService;
import lombok.extern.slf4j.Slf4j;
import net.sourceforge.tess4j.TesseractException;
import org.apache.commons.lang3.ArrayUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;
import org.springframework.util.CollectionUtils;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.util.*;
import java.util.stream.Collectors;

@Service
@Slf4j
public class AutoScanServiceImpl implements AutoScanService {
    @Autowired
    private WmNewsService wmNewsService;

    @Autowired
    private MinIoTemplate minIoTemplate;

    @Autowired
    private GreenTextScan greenTextScan;

    @Autowired
    private GreenImageScan greenImageScan;

    @Autowired
    private IArticleClient articleClient;

    @Autowired
    private WmChannelService wmChannelService;

    @Autowired
    private WmUserService wmUserService;

    @Autowired
    private WmSensitiveMapper wmSensitiveMapper;
    @Override
    public void autoScanWmNews(Long newsId) throws Exception {
        if (newsId ==null ){
            log.warn("newsId不能为空");
            return;
        }
        //1.查询新闻信息
        //1.1为空响应失败
        WmNews wmNews = wmNewsService.getById(newsId);
        if (wmNews == null){
            log.warn("新闻不能为空");
            return;
        }
        //2.提取新闻文字
        String title = wmNews.getTitle();
        String content = wmNews.getContent();
        String text = getText(title, content);
        //3.提取新闻图片
        String images = wmNews.getImages();
        List<byte[]> imagesList =  getImages(images,content);


        //用ocr获得图片的文字信息
        String ocrCheckText = ocrCheck(imagesList);
        text=text+ocrCheckText;
        //用DFA进行敏感词查询
        Boolean dfaCheck = dfaCheck(text);
        if (dfaCheck){
            updateWmNews(2,"DFA未通过",null,newsId.longValue());
            return;
        }

        //4掉用文字审核借口.
        //失败、不确定用wmNews修改
        Map textScan = greenTextScan.greeTextScan(text);
        Boolean testScanResult = checkResult(textScan, null, newsId.intValue());
        if (!testScanResult){
            log.warn("文字内容审核失败");
            return;
        }
        //5.调用图片审核接口
        Map imageScan = greenImageScan.imageScan(imagesList);
        Boolean imageScanResult = checkResult(imageScan, null, newsId.intValue());
        if (!imageScanResult){
            log.warn("图片内容审核失败");
            return;
        }
        //6.远程调用ArticleId会写到wmNews
        ArticleDto dto = wmNews2ArticleDto(wmNews);
        ResponseResult responseResult = articleClient.saveArticle(dto);
        if (responseResult == null || responseResult.getCode() !=200){
            log.warn("文章保存失败");
            return;
        }
        Long articleId = (Long) responseResult.getData();
        //将article写到wmNews中

        updateWmNews(9,"审核通过",articleId,newsId.longValue());


    }
    //ocr方法
    private String ocrCheck (List<byte[]> images) throws IOException, TesseractException {
        //判断images，如果为空返回一个空字符串
        if (CollectionUtils.isEmpty(images)){
            return "";
        }
        StringBuilder builder = new StringBuilder();
        //调用ocrUtils工具类
        for (byte[] image : images) {
            //创建流
            ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(image);
            BufferedImage read = ImageIO.read(byteArrayInputStream);
            //获得文字内容text
            String text = OcrUtil.doOcr(read);
            builder.append(text);
        }
        return builder.toString();
    }
    //查询敏感词方法
    private Boolean dfaCheck(String text){
        if (StringUtils.isBlank(text)){
            return true;
        }
        QueryWrapper <WmSensitive>wrapper = new QueryWrapper<>();
        wrapper.select("sensitives");
        List<WmSensitive> wmSensitives = wmSensitiveMapper.selectList(wrapper);
        if (CollectionUtils.isEmpty(wmSensitives)){
            return true;
        }
        //流
        List<String> words = wmSensitives.stream().filter(Objects::nonNull).map(WmSensitive::getSensitives).collect(Collectors.toList());
        if (CollectionUtils.isEmpty(words)){
            return true;
        }

        //调用工具类初始化敏感词
        SensitiveWordUtil.initMap(words);
        //敏感词匹配
        Map<String, Integer> matchResult = SensitiveWordUtil.matchWords(text);
        //返回结果
        return CollectionUtils.isEmpty(matchResult);

    }


    @Override
    public ArticleDto wmNews2ArticleDto (WmNews wmNews){
        if (wmNews == null ){
            return null;
        }
        ArticleDto dto = new ArticleDto();
        BeanUtils.copyProperties(wmNews,dto);
        dto.setLayout(wmNews.getType());
        Integer channelId = wmNews.getChannelId();
        if (channelId != null){
            WmChannel channel = wmChannelService.getById(channelId);
            if (channel != null){
                dto.setChannelName(channel.getName());
            }

        }
        //获取作者名，作者ID
        Integer userId = wmNews.getUserId();
        if (userId != null){
            dto.setAuthorId(userId.longValue());
            WmUser wmUser = wmUserService.getById(userId);
            if (wmUser!=null){
                dto.setAuthorName(wmUser.getName());
            }
        }
        return dto;

    }

    private  Boolean updateWmNews(Integer status ,String reason ,Long articleId ,Long newsId){
        WmNews wmNews = new WmNews();
        wmNews.setId(newsId.intValue());
        wmNews.setStatus(status.shortValue());
        wmNews.setReason(reason);
        if (articleId != null){
            wmNews.setArticleId(articleId);
        }
        boolean updateById = wmNewsService.updateById(wmNews);

        return updateById;
    }

    private Boolean checkResult (Map result ,Long articleId ,Integer newsId){
        if (CollectionUtils.isEmpty(result)){
            return true;
        }
        String suggestion = (String) result.get("suggestion");
        if ("pass".equals(suggestion)){
            return true;
        }else if ("block".equals(suggestion)){
            updateWmNews(2,"未通过",articleId,newsId.longValue());
            return false;
        }else if ("review".equals(suggestion)){
            updateWmNews(3,"人工审核",articleId,newsId.longValue());

        }
        return true;
    }


    //提取新闻图片
    private List<byte[]> getImages(String images ,String content){

        //1.生名总图片集合
        List<String> finalList = new ArrayList<>();
        //2.提取封面图
        if (StringUtils.isNotEmpty(images)){
            String[] split = images.split(",");
            if (ArrayUtils.isNotEmpty(split)){
                List<String> list = Arrays.asList(split);
                finalList.addAll(list);
            }
        }
        //3.提取内容图
        if (StringUtils.isNotEmpty(content)){
            //将content转为集合
            List<Map> maps = JSON.parseArray(content, Map.class);
            if (!CollectionUtils.isEmpty(maps)){
                for (Map item : maps) {
                    if (CollectionUtils.isEmpty(item)){
                        continue;
                    }
                    Object type = item.get("type");
                    if ("image".equals(type)){
                        String value = (String) item.get("value");
                        finalList.add(value);
                    }
                }
            }
        }
        List<byte[]> result = new ArrayList<>();
        //4.遍历集合
        if (!CollectionUtils.isEmpty(finalList)){
            for (String url : finalList) {
                if (StringUtils.isNotEmpty(url)){
                    continue;
                }
                byte[] bytes = minIoTemplate.downLoadFile(url);
                result.add(bytes);
            }
        }
        //5.返回集合
        return result;
    }

    //提取新闻文字
    private String getText(String title ,String content){
        if (StringUtils.isBlank(content)){
            return title;
        }
        //提取content文字内容
        //将json转为集合
        List<Map> maps = JSON.parseArray(content, Map.class);
        if (CollectionUtils.isEmpty(maps)){
            return title;
        }
        StringBuilder builder = new StringBuilder();
        for (Map item : maps) {
            if (CollectionUtils.isEmpty(item)){
                continue;
            }
            Object type = item.get("type");
            if ("text".equals(type)){
                String value = (String) item.get("value");
                builder.append(value);
            }
        }
        //将content文字和title组合
        builder.append(title);
        return builder.toString();
    }
    @Autowired
    private IScheduleClient scheduleClient;

    @Scheduled(fixedRate = 1000)
    public void getTask(){
        ResponseResult responseResult = scheduleClient.poll();
        if (responseResult ==null ||responseResult.getCode()!=200)  {
            log.warn("任务为空");
            return;
        }
        String data = (String) responseResult.getData();
        if (StringUtils.isEmpty(data)){
            log.warn("没有可消费任务");
            return;
        }
        Task task = JSON.parseObject(data,Task.class);
        if (task ==null ){
            log.warn("没有可消费任务");
            return;
        }
        byte[] parameters = task.getParameters();
        WmNews wmNews = ProtostuffUtil.deserialize(parameters, WmNews.class);
        if (wmNews == null){
            log.warn("缺失参数");
            return;
        }
        try {
            autoScanWmNews(wmNews.getId().longValue());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
